Joe:

If you don't have the time or inclination to learn a "new" instrument, you can get a 6 string banjo that's tuned like a guitar.

My only caution there would be, don't get a cheap (under $200) as they can sound rather "tinny". But I was at a Jam Session recently where a lady had a very nice one and it sounded great, and she didn't have to learn new fingerings as she already played guitar.

Another Jam Session (I'm getting addicted <grin>). A guy bought an old, used, but quality 4 string banjo, re-strung it like the DGBE stings on a guitar. You couldn't tell it wasn't a "real" regularly-strung 4 stringer.

Good luck!
LLOYD S